﻿// Copyright 2009 Mike Geise
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
//     http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

namespace Falcon.Core.Validators
{
	using System;
	using Falcon.Core.Domain;
	using Falcon.Core.Domain.Repositories;
	using Falcon.Core.Extensions;
	using Falcon.Core.Validation.Validators;

	public class UserEmailAddressMustExistValidator : IValidator
	{
		/// <summary>
		/// Initializes a new instance of the <see cref="UserEmailAddressMustExistValidator"/> class.
		/// </summary>
		public UserEmailAddressMustExistValidator()
		{
			this.UserRepository = Application.Resolve<IUserRepository>();
		}

		/// <summary>
		/// Gets or sets the user repository.
		/// </summary>
		/// <value>The user repository.</value>
		public IUserRepository UserRepository
		{
			get;
			set;
		}

		/// <summary>
		/// Validates the specified value.
		/// </summary>
		/// <param name="value">The value.</param>
		/// <param name="against">The against.</param>
		/// <returns></returns>
		public bool Validate(object value, object against)
		{
			var emailAddress = value as string;

			if (emailAddress.HasValue())
			{
				var user = UserRepository.GetBy(new UserSpecification
				{
					EmailAddress = emailAddress
				});

				return user != null && user.EmailAddress.Equals(emailAddress, StringComparison.OrdinalIgnoreCase);
			}

			return true;
		}
	}
}